Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 480 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.True or false: a medicine dropper works by air pressure. (a) False (b) True
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of water (c) the length of the stem
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
4. 4.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) food colour (d) a white flower
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
8. 8.True or false: a balloon is needed for the water cycle bowl. (a) False (b) True
9. 9.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
10. 10.💧 Which of these lets water climb up it? (a) a paper towel (b) a piece of foil (c) a steel spoon (d) a glass marble
11. 11.🛟 Which of these sinks in water? (a) a feather (b) an empty capped bottle (c) a dry leaf (d) a steel spoon
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a battery cell (d) a glass of water
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) how much of each liquid (c) the order of the layers (d) the order of pouring
14. 14.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
15. 15.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
16. 16.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a clock or timer (c) a teaspoon (d) a mirror
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) whether the card stays (c) the same card (d) how full the glass is
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
20. 20.True or false: a metal key sinks in water. (a) True (b) False
21. 21.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the swimmer (c) gas from the rocket (d) water from the oars
22. 22.True or false: a big sugar cube dissolves faster. (a) True (b) False
23. 23.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the person dropping (c) the drop height (d) time to reach the floor
25. 25.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a paper clip (c) a ruler (d) a strip of paper
27. 27.True or false: a magnet is needed for the paper helicopter. (a) False (b) True
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) turmeric powder (d) a tub of water
29. 29.🧺 Which of these is needed for the density tower? (a) a mirror (b) a battery cell (c) honey (d) a magnet
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sunny window (d) a clear glass of water
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) turmeric powder (d) a battery cell
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
34. 34.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same straw
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
39. 39.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True

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